Loom picker



V. WEISS LOOM PI CKER Dec. 30, 1930.

Filed April l5, 1929 Patented Dern 30, 1930 STATI-:s

PATENT ori-'ics I VALENTIN `IVKEISS, F IBEBLIN-WEISS-ENSE, GERMANY, ASSIGNOR '10 THE FIBH` J'AROSLAWS ERSTE GLIMMERWABENFABBIK, OF BERLIN, GERMANY.

Loom PICKER.

f f application mea EApril laissa, serial No.

M invention relates to loom pickers which consistA of layers Vof fibrous material, preferably-,woven cloth, united together to orma laminated bod and also relates to the manu- 5 facture thereo o f According to theinvention the picker consists ofwa laminated body in whichv layers-'of fibrous material which have been 'coated on one lor both sides with artificial resin before being nnitedtogether and which maybe more orless impregnated with artificial resin `(hereinafterthese layers willbe referred to as treated layers alternate, in a predetert mined sequence with layers of fibrous mateticularly a condensation product offphenol-y formaldehyde, and it ispresent in yIthe finished body in a'wholly or partiallyhardened condition,y p i ,l l p j y y. Where treated and raw fibrouslayers are juxtaposed to one another, the treated layers impart some of the artificial resinto the'sur- Aface of the raw layers, but thelatter remain .free from artificial resin in the center. `Also 25 raw layers juxtaposed to one another do ynot receive any artificial resin, and the raw layers 'thus retain their natural pliability.

The sequence of the layers may, for example, be so selected that each rawjlayer. is `fol- 40 lowed by a layer treated on'both sides, in which case allthe layers are caused to adhere ltogether by the artificial resin. There may however be strata consisting. of ak .plurality of treated layers togetherand strata consist- *ing ofa plurality of raw layers together and such strata may `alternate Wlth yoneanother in any. desired manner as also With strataco'nsisting of both treatedand raw layers. 1 l

As a treated layer or strata thereof,`espe cially when the artificial resin is in a more rpreliminary, product require to be kept in This can be very simply effected and the 355,619, and in `sammy Api-n 2o, 192s.- I or less hardened conditionais firmer, harder and more elastic than a rawlayer, or strata.

lof raw layers,'whereas, on the other hand, a.

raw layeror strataiisfsofter, tougher and morevpliable than a treated layer, or strata of treated layers,"it is possible to so select the sequence of the layers as to give the picker any desired characteristics and to Vary these characteristics in different parts by varyinv the sequence, and thusto adapt the mechanie0 'ial properties of the pickerto the particular Wear and tear atdifi'erent parts of the picker. This method; of manufacturing the pickers has the advantage'that only two classes 'of 6.5 stock, y-viz, treated fibrous Webs and untreated `br raw fibrous` webs, from which tomanufacture-pickers ofthe most varied roperties. It has also been found that pic ers com-V pounded from treated and vrawfibrous webs, particularlycloth, excel in' toughness and in 'gentleness of stroke a picker consisting `Wholly rof, treated layers. The 'icker or the blank for'thesame may be ma e yby superposing separate pieces of treated layers," preferably of cloth, cut to a suitable size.v and also similar pieces of raw layers, preferably lof cloth, in the desired se'- quence to forma pile and unitin the layers together by heating the pile un erpressure in a mouldorwit out the use ofa mould, whereu onthe body so obtainedv is further shaped ypressure and heat orl by machinery if necessaryfor byboth of these methods. When an artificial resin capable of hardening is used,it ca nbe hardened'to the desired degreewhen the aforesaid heat andpressure are employed, or later in a separate operar tion. i

In the preferred manner of carrying out the invention, the picker` or blank for same is made by continuousfibrous Webs being wound t in such amannerthat treated and raw layers alternate with each other-,in the wound body.

picker can be produced from this wound body by heat and pressure with 4or Without a mould and where necessary by subsequently further shaping under heat and pressure, or by machining, or by both of these methods. By 1 00 kist the heat and pressure the artificial resin can.

also be hardened to the desired degree.

For example, b the coiling of a treated cloth web a coil 1s. obtained which consists entirely of treated layers of cloth and by the coiling of an untreated cloth web, a coil is obtained which consists entirely of raw'or untreated' layers of cloth. By the combined coiling of a treated and untreated web of cloth,;a coil is obtained which consists of alternate layers of treated and untreatedA cloth. By t e combined ceiling of three or more webs, of which at least one is treated the number of combinations can be increased.

In another manner of carrying out the invention, a coiled body is produced by they 'the coil consists only of treated layers; "When thisbody is shaped to .Eorm a loom picker, one proceeds in this-way that the ,striking face of the picker isformedby that part of the previously formed coil in whichtreated and untreated layers alternate, whilstthe head ofthe picker in ywhich the guide holes are madeis formed from thatpart of the coiled body which consists entirely of treated layers'. kIn the accompanying drawingsshowing by way of illustration lvarious embodiments 'of theinvention. p

Fig. 1 is an edge View of a wound ring used in Ithe manufacture -of pickers of overpick looms', andjFig. 1av an enlarged longitudinal sectional view through one side oth`e ring, the section being taken'along line la-l'a in Fig. 1.` Fig. 1b shows'a fdia rammatic View of thering unwound in a re uced scale.

Figs. 2 v and 3 are front and side views re-A spectively of a pickerv constructed from the rmlg shown in Fig'. 1.

ig'. 4 is a ront'view of a modified picker. Figs. 5 and 6 are ed e and sectional views respectively of a coile body for producing a picker for underpick looms, the section 'of vbeing taken along line 6 6 in Fig. 5. y ig. k7` is a sectional view of a modified construction of ring, taken in a plane rectangular to the axis of the ri y* n In the manufacture of theV rlng shown in Fig. 1,',a web of cloth treated with a hardenl fing artificial resin is first lwound upon aman- `drel of the same size as the internal diameter of the ring until a` zone 1 is produced.- Thereu on an untreated web is wound together with the treated web upon the zone 1 so that 1a Azone 2is produced in which treated and untreated layers alternate witheach other. The treatedweb yis then cut o" and the unliardenin treated web wound still further to roduce a zone 3 which contains only untreated) layers. The untreated web is then further wound on together with atreated web until a zone 4 is produced in which treated and untreated layers again alternate with one another. Finally, the untreated web lissevered and the treated web lwound on alone to form the outer zone 5.-`

Preferably, VAthe webs are heated during winding sok that the artificial resin is in an adhesive condition., i v

Fig. 1a shows diagramlnatically a crosssection througha ring so made, the layers being shown enlarged and reduced in number for clearer illustration and the treated layers being indicated by hatching.

Figs. lb'shows the vring unwound.V The numerals denote the zones which are formed by the corresponding parts of the web'. The stretches2 and 4 are considerably'enlarged for clearer illustration.

The ringv so produced is shaped byy pressure andv heat Aand if necessary by mechanical V treatment to forml a pickergas in Figs. 2 and 3,th'e artificial resin at the sametim'e Thel zone V5l nowconstit'utesv a firm an lia-rd outer skin which' is .well adapted towithstand the wear of the` point ofthey shuttle. The'zone 3 forms a soft bolster within the picker which substantially increasesfi'ts durability. 'The zone v1 forms a backing'for reinforcement yfor the bolster and at'ythe" same time protects the inner edges of the guide' aperturesj from breaking out. The zones 2 and?) which only requireftobe a few layers in thickness serve mainly to providel'a good and's'ure connection between the zone 3 and the zones'land-5.

In this construction the outerskin 5 unitedlto a uniform mass by the artificial resin surrounds at allv parts the "core consisting of layers notV provided with 'artificial' resin and therefore not adhesively united, so that there is no danger of the layers opening out.v Fi`gg4 however. .shows a construction 'in which the core 7 'made of untreatedlayers elxtends'to the edge 'at the foo't ofthe picker. In this case therefore'the opening out of thel layers is prevented byl rivetsl 8 whichbindl all the layers together.

Figs. 5 and `6 show a substantially rectangular body or fiattening ring which is produced by jointly winding a treated and untreated web upon a rectangular mandrel and which is subsequently pressed and heatedl and usedv as the element for a pickerfor underpick looms. In the manufacture of a ring as shown 1n F1g.'7 a single Web offibrons material impregnated with artificial resin is Wound upon a mandrel of the same size as the internal'diameter of th(` ring to bey produced until a ring ofthe thickness a is produced. A piece b` of untreated cloth is then laid on the ring and extends over about a third of the ring circumference, and thetreated web is then wound on again over the piece b. After one turn of the treated web another untreated piece b of the same length as before is laid on the ring and after winding on a further turn of the treated web, a third piece?)2 is placed on and held in place by winding on the treated Web. Thereupon the rest of the treated web is wound 011 Without any intermediate pieces until a ring is produed Whose thickness over about a third of its circumference is somewhat larger by about the thickness of the three pieces 6,2/ and b. In the drawing the increased thickness is exaggerated for greater clearness.

When a picker as shown in Figs. 2 and 3 is produced from this ring, the head of the picker which has the guide apertures 6 is formed from that part of the ring which has no insertions, whilst the foot against which the shuttle strikes is made from that part which has the insertions b, b and b2.

I wish it to be understood that I do not desire to be limited to the exact details of construction shown and described, for obvious modifications will occur to a person skilled in the arf In the claims affixed to this specification no selection of any particular modification of the invention is intended to the exclusion of other modifications thereof and the right to subsequently make claim to-any modification not covered by these claims is expressly reserved.

I claim:

1. A picker for looms or similar article comprising untreated fibrous layers and fibrous layers treated with an artificial resin, the juxtaposed untreated and treated layers being firmly united by the said resin.

2. A picker for looms or similar article comprising untreated layers of textile cloth and layers of'textile cloth treated with an artificial resin, said layers being united. to form a laminated body in which the layers are caused to adhere together by means of the said resin.

3. A picker for looms or similar article comprising untreated layers of textile cloth and layers of textile cloth treated with an artificial resin, consisting of a phenol formaldehyde condensation product, all said layers being united to form a laminated body in which the layers are ycaused to adhere together by means of the said resin.

4. A blank for a loom picker consisting of a laminated body composed of untreated fibrous layers and fibrous layers treated with an artificial resin, said layers alternating with one another and being firmly united by the said resin.

5. A icker for looms or similar articles comprising outer and inner skins each, consisting of laminated layers of fibrous material united by an artificial resin, and an inner portion consisting of alternatinr layers of untreated fibrous material and terial treated with an artificial resin.

6. A picker for looms or similar article comprising outer and inner skins each composed of laminated layers of fibrous material united by an artificial resin, and an inner portion composed of a laminated core formed of untreated layers of fibrous material, and zones interposed between said core and inner and outer skins, each zone composed of alternating layers of untreated fibrous material and fibrous material treated with an artificial resin.

7. The method of manufacturing pickers for looms or similar articles which consists in winding a web'of fibrous material treated with anartificial resin alternately with other webs to produce a laminated body, subjecting said body to heat and pressure to unite the laminae, and shaping said body while under the said heat and pressure.

8. The method of manufacturing pickers for looms or similar articles which consists in winding webs of fibrous material treated with artificial resin and other webs together upon-a mandrel, stripping the wound body Vfrom the mandrel, uniting the windings together by softening said resin, and shaping said body under heat and pressure.

9. The method of manufacturing pickers for looms or similar articles which consists in winding a web of fibrous material treated brous mawith artificial resin upon a mandrel, winding VALENTIN. WEISS. 

